r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1077

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

21.3.1
SCI boot mode executes programming/erasing of the user MAT by means of the control command
and program data transmitted from the externally connected host via the on-chip SCI_1.
In SCI boot mode, the tool for transmitting the control command and program data, and the
program data must be prepared in the host. The serial communication mode is set to asynchronous
mode. The system configuration in SCI boot mode is shown in figure 21.2. Interrupts are ignored
in SCI boot mode. Configure the user system so that interrupts do not occur.
tool and program
SCI Boot Mode
Programming
Host
data
Figure 21.2 System Configuration in SCI Boot Mode
Control command,
program data
Response
RxD1
TxD1
Software for
analyzing
control
commands
(on-chip)
SCI_1
Rev. 1.00 Sep. 19, 2008 Page 1049 of 1270
This LSI P27 and P26
On-chip
memory
Flash
MD2 to MD0
RAM
Section 21 Flash Memory
REJ09B0466-0100
00
011